<section class="content-section-flex">
  <section class="content-section-column">
    <h3>标题分组</h3>
    <button class="ui-dropdown-button" #lvDropdown="lvDropdown" lv-button lv-dropdown [lvDropdownMenus]="menus">
      Export
      <lv-select-trigger-icon [lvOpen]="checkPanelState()"></lv-select-trigger-icon>
    </button>
  </section>

  <section class="content-section-column">
    <h3>分割线分组</h3>
    <i class="ui-icon" lv-icon="lv-icon-list" lvColorState lv-dropdown [lvDropdownMenus]="dividingMenus"></i>
  </section>
</section>
